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Commit 55fa597e authored by Sudheer Papothi's avatar Sudheer Papothi Committed by Aditya Bavanari
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soc: soundwire: Avoid bus clash during clock stop 



Mask bus clash interrupt before clock stop mode to avoid
misfire of the interrupt. Clear and enable the interrupt
after clock is enabled.

Change-Id: I494073a668d298eef466c0f10ab202c3c69f9968
Signed-off-by: default avatarSudheer Papothi <spapothi@codeaurora.org>
parent 8bcaeab6

soc/swr-mstr-ctrl.c

+15 −0
Original line number Diff line number Diff line
@@ -2691,6 +2691,14 @@ static int swrm_runtime_resume(struct device *dev) 
		} else {

			/*wake up from clock stop*/

			swr_master_write(swrm, SWRM_MCP_BUS_CTRL_ADDR, 0x2);

			/* clear and enable bus clash interrupt */

			swr_master_write(swrm, SWRM_INTERRUPT_CLEAR, 0x08);

			swrm->intr_mask |= 0x08;

			swr_master_write(swrm, SWRM_INTERRUPT_MASK_ADDR,

					 swrm->intr_mask);

			swr_master_write(swrm,

					 SWR_MSTR_RX_SWRM_CPU_INTERRUPT_EN,

					 swrm->intr_mask);

			usleep_range(100, 105);

			if (!swrm_check_link_status(swrm, 0x1))

				goto exit;
@@ -2772,6 +2780,13 @@ static int swrm_runtime_suspend(struct device *dev) 
				}

			}

		} else {

			/* Mask bus clash interrupt */

			swrm->intr_mask &= ~((u32)0x08);

			swr_master_write(swrm, SWRM_INTERRUPT_MASK_ADDR,

					 swrm->intr_mask);

			swr_master_write(swrm,

					 SWR_MSTR_RX_SWRM_CPU_INTERRUPT_EN,

					 swrm->intr_mask);

			mutex_unlock(&swrm->reslock);

			/* clock stop sequence */

			swrm_cmd_fifo_wr_cmd(swrm, 0x2, 0xF, 0xF,